How to force universal Mac apps to run under Rosetta emulation instead of natively

Apple provides the enhanced Universal 2 binary feature to its developers who wish to ship macOS apps that pack in code for both Intel and Apple Silicon systems. In other words, a universal binary runs natively on both Apple M1 and Intel-based Mac computers because it contains executable code for both architectures. However, certain edge cases may justify running a native Apple Silicon app under Rosetta emulation, and we show you how it's done.